Fear and the worst case scenario

I posted this at http://landmarkforum.tribe.net

I just signed today to have a new single family home built in D.C. Now, you California folks might be calling me a wimp, but I'm paying a lot for an East Coast house and it's more than a small stretch for my financial situation ...

I've taken the Landmark Forum, the Landmark Advanced Course and am currently taking the SELP. I know my Act and I know how to generate myself as a possibility. I've been generating myself as the possiblity of confidence and decisiveness (every five minutes), but I kept finding myself being "the deer in the headlights".

The story I've been living into is the worst-case-scenario: something like this: interest rates will go up and house prices will fall between the time I sign the contract and the time I move in and I will lose a pile of money. I've had to constantly remind myself that it could go the other way and I could do well instead. So today I sucked it up and just did it. I went and signed the papers.

I seem to have an inauthenticity in this area about having faith that the really big decision will go my way and not the way of the worst-case-scenario. Let's see:
I'm pretending to be confident and strong.
I'm hiding that I'm scared to death that I'm going to get taken to the cleaners in this house transaction like I did in the stock market a few years ago.
The impact on me is I've been burning a lot of energy worrying about what might happen.
The impact on my wife is she has been stressing instead of just being able to trust that I know what I'm doing.
The victory over the past is that I made this huge decision and I didn't let the past determine my future.

The possiblity I'm creating for myself and my life is the possibility of being a happy homeowner.

I'm wondering if the folks who are really successful at big things (Donald Trump, Bill Gates) are able to put aside the worst case scenario and act without fear knowing that the outcome will most likely be something between the best case scenario and the worst case scenario.